Radio navigation training device

Claim 1

A navigation training device comprising: an elongate base sheet folded about itself to define a front section and a back section; a first arcuate cutout defined in said front section near the top of said front section; a first arcuate disc centrally rotatably fixed to said back section, said first disc having compass markings thereon and being positioned in said first arcuate cutout so said compass markings are visible through said first cutout, said first disc having an outer diameter larger than said first cutout and having a portion extending beyond an edge of said front section so that said first disc can be hand rotated; a first marker indicia on said base sheet face section immediately adjacent said first cutout; a first pointer centrally rotatably mounted on said back section over said first disc to rotate with respect to said first disc; a plurality of second arcuate cutouts defined in said front section to be circularly oriented and to be spaced from said first cutout; a second arcuate disc centrally rotatably fixed to said back section at the center of said circularly oriented second cutouts, said second disc having compass markings thereon and being positioned so said compass markings are visible through said second cutouts, said second disc having an outer diameter larger than the outer diameter of said circular orientation of said second cutouts and having a portion extending beyond the edge of said front section so that said second disc can be hand rotated; a second marker indicia on said base sheet face section immediately adjacent one of said second cutouts; a circular disc section fixedly located on said base sheet front section having the center thereof coincident with the center of said second cutout circular orientation and having an outer peripheral edge coinciding with inner edges of said second cutouts; a third marker indicia on said circular disc section; a plurality of third arcuate cutouts defined in said front section to be circularly oriented and to be spaced from said first and second cutouts; a third arcuate disc centrally rotatably fixed to said back section at the center of said circularly oriented third cutouts, said third disc having two sets of compass markings thereon and being positioned so that each set of said compass markings is visible through one of said third cutouts, said third disc having an outer diameter larger than the outer diameter of said circular orientation of said third cutouts and having a portion extending beyond the edge of said front section so that said third disc can be hand rotated; a fourth marker indicia on said base sheet face section immediately adjacent one of said third cutouts; a fifth marker indicia on said base sheet face section immediately adjacent another one of said third cutouts; a semi-circular disc section fixedly located on said base sheet front section so that a diameter thereof passes through the center of said circularly oriented third cutouts; a second pointer rotatably mounted at one end thereof on said base sheet front section at a location spaced from the center of said circularly oriented third cutouts; a polygonal cutout defined in said base sheet front section; and an elongate pull tab having indicia thereon and movably attached to said base sheet front section so said indicia will be visible through said polygonal cutout.